太白红杉生殖年龄及其影响因素分析

Analysis on reproduction age in Larix chinensis and effect factors

研究了太白红杉的平均生殖年龄、最高生殖年龄和最小生殖年龄以及与环境之间的关系.结果表明太白红杉的平均生殖年龄为78.59a,最小生殖年龄为26a,最大生殖年龄为208a;其中南坡太白山最小生殖年龄26a、最高生殖年龄153a、平均生殖年龄72.97a;北坡最小生殖年龄29a、最高生殖年龄208a、平均生殖年龄92a.海拔和年降水与平均生殖年龄呈正相关,坡度与最高生殖年龄呈正相关,最高生殖年龄与最小生殖年龄呈正相关,表明提早生殖会减少太白红杉的生殖寿命.

The average reproduction age、maximum reproduction age and minimum reproduction age of Larix chinensis were studied in this paper, the relationships between the reproduction age and the environment factors were also discussed. The result shows that the average reproduction age was 78.59 years, the minimum reproduction age was 26 years, and the maximum reproduction age was 208 years. In South Slope, the average reproduction age was 72.97 years, the minimum reproduction age was 26 years, and the maximum reproduction age was 153 years. In North Slope, the average reproduction age was 92 years, the minimum reproduction age was 29 years, and the maximum reproduction age was 208 years. The average reproduction age shows positive correlation to altitude and annual precipitation, the maximum reproduction age was positive correlation to slope and negative correlation to the minimum reproduction age, this shows that the earlier reproduction decrease the time of reproduction.